Jam/OutlineTrackerExample

01 packagepackage is used to name the directory or folder a class is in Jam;
02 
03 importimport means to make the classes and/or packages available in this program java.awt.Color;
04 importimport means to make the classes and/or packages available in this program java.awt.geom.*;
05 importimport means to make the classes and/or packages available in this program fang.*;
06 importimport means to make the classes and/or packages available in this program Beta.*;
07 
08 
09 /**This classclass is a group of fields and methods used for making objects is a good utility forfor is a looping structure for repeatedly executing a block of code testing
10  * out newly written trackers to make sure they
11  * move properly.  It's usually easier to 
12  * first test out the trackers using thisthis means the current object (the implicit parameter) classclass is a group of fields and methods used for making objects
13  * before adding them to more complex game
14  * code.
15  * @authornull Jam Jenkins
16  */
17 publicpublic is used to indicate unrestricted access (any other class can have access) classclass is a group of fields and methods used for making objects OutlineTrackerExample extendsextends means to customize or extend the functionality of a class GameLoop
18 {open braces start code blocks and must be matched with a close brace
19   /**sprite to move*/
20   privateprivate is used to restrict access to the current class only Sprite sprite;
21   /**tracker to move the sprite*/
22   privateprivate is used to restrict access to the current class only OutlineTracker tracker;
23 
24   /**makes and adds the sprite to the screen*/
25   publicpublic is used to indicate unrestricted access (any other class can have access) voidvoid means the method does not return a value startGame()
26   {open braces start code blocks and must be matched with a close brace
27     makeSprites();
28     addSprites();
29   }close braces end code blocks and must match an earlier open brace
30 
31 
32   /**makes an ellipse and sets it in
33    * motion given a tracker */
34   privateprivate is used to restrict access to the current class only voidvoid means the method does not return a value makeSprites()
35   {open braces start code blocks and must be matched with a close brace
36     sprite=this assignment operator makes the left side equal to the right sidenewnew is used to create objects by calling the constructor OvalSprite(1, 1);
37     sprite.setScale(0.05);
38     sprite.setLocation(0.5, 0.5);
39     //sprite.setBlurLength(25);
40 
41     Sprite outline=this assignment operator makes the left side equal to the right sidenewnew is used to create objects by calling the constructor PolygonSprite(5);
42     outline.setScale(0.5);
43     outline.setLocation(0.5, 0.5);
44     outline.setColor(Color.YELLOW);
45     canvas.addSprite(outline);
46 
47     tracker=this assignment operator makes the left side equal to the right sidenewnew is used to create objects by calling the constructor OutlineTracker(outline, -0.5);
48     tracker.setLooping(truetrue is the boolean value that is the opposite of false);
49     sprite.setTracker(tracker);
50     sprite.setLocation(tracker.getCurrentPoint());
51   }close braces end code blocks and must match an earlier open brace
52 
53   /**adds the sprite to the screen*/
54   privateprivate is used to restrict access to the current class only voidvoid means the method does not return a value addSprites()
55   {open braces start code blocks and must be matched with a close brace
56     canvas.addSprite(sprite);
57   }close braces end code blocks and must match an earlier open brace
58 }close braces end code blocks and must match an earlier open brace